CN211646355U - Novel combined pile foundation structure suitable for whole bridge - Google Patents
Novel combined pile foundation structure suitable for whole bridge Download PDFInfo
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- CN211646355U CN211646355U CN201922316668.8U CN201922316668U CN211646355U CN 211646355 U CN211646355 U CN 211646355U CN 201922316668 U CN201922316668 U CN 201922316668U CN 211646355 U CN211646355 U CN 211646355U
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Abstract
The utility model relates to a novel combined pile foundation structure suitable for whole bridge, mainly can not satisfy the requirement of whole bridge to traditional ordinary concrete pile foundation deformability, the novel combined pile foundation structure that can satisfy whole bridge deformability requirement and can guarantee whole bridge atress performance again of production, it mainly includes cylindric concrete pile body, the inside of concrete pile body is provided with the steel reinforcement cage, the top surface middle part of concrete pile body is equipped with the mounting hole, it protects a section of thick bamboo to be provided with the prefabrication in the inside of mounting hole, the prefabrication is protected the middle part of a section of thick bamboo and is vertically worn to be equipped with the rod iron, the mounting hole is stretched out and is used for inserting the abutment in the upper end of rod iron, the lower extreme of rod iron inserts in the concrete pile body, it has elastic material to fill between the lateral wall of a section of thick bamboo with the prefabrication, in order to. Structural design is simple, reasonable, utilizes prefabricated a section of thick bamboo, rod iron and elastic material to constitute the subassembly that warp, can obviously improve the atress deformability of pile foundation when not reducing whole bridge pile base bearing capacity.
Description
The technical field is as follows:
the utility model relates to a novel combined pile foundation structure suitable for whole bridge.
Background art:
with the increase of the bridge age, the diseases of the bridge become more and more prominent, and the proportion of the maintenance and the updating in the whole cost becomes larger and larger. The expansion device of the bridge is directly exposed in the atmosphere, and the use environment is very severe due to the fact that precipitation, dust, sundries, heavy traffic impact and the like inevitably corrode the expansion device. The damage or partial failure of the expansion device causes serious problems, and the expansion device is the most easily damaged part of the bridge and is difficult to repair or replace. In order to solve the drawback of the traditional expansion joint of the seamed bridge, the whole bridge is operated and born, but for the seamless bridge, the expansion deformation of the main beam under the temperature change and earthquake action is mainly borne. Due to national conditions, construction habits and the like, the concrete pile foundation is widely used in China, but the concrete pile foundation is easy to crack and crush in the deformation of the integral bridge.
The utility model has the following contents:
the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a novel combined pile foundation structure suitable for whole bridge is provided, structural design is reasonable, not only easily restores and changes, but also the power consumption and the deformability of multiplicable whole bridge.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a novel combined pile foundation structure suitable for whole bridge, includes the concrete pile body, the top surface middle part of the concrete pile body is equipped with the mounting hole, be provided with in the mounting hole and be used for the deformation subassembly that is connected with the abutment.
Further, the subassembly that warp protects including setting up the prefabricated section of thick bamboo inside the mounting hole, the prefabricated rod iron that wears to be equipped with in the middle part of protecting a section of thick bamboo, the upper end of rod iron is stretched out the mounting hole and is used for being connected with the abutment, and the lower extreme of rod iron is inserted in the concrete pile body, and it has elastic material to fill between the lateral wall of a section of thick bamboo is protected with the prefabrication to the rod iron.
Further, the top surface of the prefabricated pile casing is flush with the top surface of the concrete pile body.
Further, the mounting hole is a round hole; the prefabricated pile casing is of a cylindrical tubular structure with an opening at the upper end, a through hole which is beneficial to the downward penetration of a steel bar is formed in the middle of the bottom surface of the prefabricated pile casing, and the lower end of the steel bar penetrates through the through hole and then is inserted into the concrete pile body.
Further, the elastic material is rubber particles or asphalt.
Further, the inside of concrete pile body is equipped with the steel reinforcement cage, the steel reinforcement cage is located the outside of mounting hole, and the horizontal reinforcing bar and the rod iron welded fastening of steel reinforcement cage upper end.
Furthermore, the center lines of the concrete pile body, the reinforcement cage, the mounting hole, the prefabricated protective cylinder and the steel bar are coincided.
Further, the distance between the steel bar and the side wall of the prefabricated pile casing is larger than 15 cm, and the distance between the side wall of the prefabricated pile casing and the side wall of the concrete pile body is larger than 15 cm.
Compared with the prior art, the utility model discloses following effect has: (1) the utility model has the advantages that the deformation component is arranged in the upper end of the pile body, so that the stress deformation performance of the pile foundation can be obviously improved while the bearing capacity of the whole bridge pile foundation is not reduced; (2) the utility model has simple construction process, high operability and strong applicability, can be widely applied to the pile foundation construction of the integral bridge, and ensures the deformation performance of the pile foundation; (3) the utility model relates to a rationally, easily restore and change.
Description of the drawings:
FIG. 1 is a schematic diagram of the overall construction of an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the embodiment of the present invention;
fig. 3 is a schematic top view of the embodiment of the present invention.
The specific implementation mode is as follows:
in order to explain the present invention more clearly, the following description of the present invention is made with reference to the accompanying drawings and examples, and it is to be understood that the drawings listed below are merely some specific examples of the present invention.
As shown in figures 1-3, the utility model relates to a novel combined pile foundation structure suitable for an integral bridge, which mainly aims at the problem that the deformation capability of the traditional common concrete pile foundation can not meet the requirement of the integral bridge, and the novel combined pile foundation structure which can meet the requirement of the deformation capability of the integral bridge and can ensure the stress performance of the integral bridge is produced, and mainly comprises a cylindrical concrete pile body 1, a reinforcement cage 2 is coaxially arranged inside the concrete pile body 1, a mounting hole 6 is coaxially arranged in the middle of the top surface of the concrete pile body 1, a prefabricated pile casing 3 is coaxially arranged inside the mounting hole 6, a steel bar 4 is vertically penetrated in the middle of the prefabricated pile casing 3, the upper end of the steel bar 4 extends out of the mounting hole 6 and is used for being inserted into an abutment, the lower end of the steel bar 4 is inserted into the concrete pile body 1, and an elastic material 5 is filled between the steel bar 4 and the side wall of the prefabricated pile casing 3, to ensure the deformation requirement. The prefabricated pile casing, the steel bar and the elastic material are utilized to form the deformation assembly, so that the stress deformation performance of the pile foundation can be obviously improved while the bearing capacity of the whole bridge pile foundation is not reduced.
In this embodiment, the top surface of the prefabricated pile casing 3 is flush with the top surface of the concrete pile body 1, and the height of the prefabricated pile casing 3 is greater than 1.5 m.
In this embodiment, the mounting hole 6 is a circular hole; the prefabricated pile casing 3 is of a cylindrical tubular structure with an opening at the upper end, the shape and the size of the prefabricated pile casing 3 are respectively matched with those of the mounting hole, a through hole which is beneficial to the downward penetration of a steel bar is formed in the middle of the bottom surface of the prefabricated pile casing 3, and the lower end of the steel bar 4 is inserted into the concrete pile body 1 after penetrating through the through hole.
In this embodiment, the elastic material 5 is made of rubber particles or asphalt.
In this embodiment, steel reinforcement cage 2 is located the outside of mounting hole, and the horizontal reinforcing bar of 2 upper ends of steel reinforcement cage forms a whole with 4 welded fastening of rod iron, guarantees that the central line of steel reinforcement cage and rod iron is in on the same straight line.
In this embodiment, the center lines of the concrete pile body, the reinforcement cage, the mounting hole, the prefabricated casing and the steel bar are overlapped.
In this embodiment, the distance between the steel bar 4 and the side wall of the prefabricated casing 3 is greater than 15 cm, so as to form a distance of more than 15 cm for filling the elastic material; the distance between the side wall of the prefabricated pile casing 3 and the outer side wall of the concrete pile body 1 is larger than 15 cm, namely the wall thickness of the upper part of the concrete pile body is larger than 15 cm.
In this embodiment, the diameter of the steel rod is 15 cm.
In this embodiment, set up the sliding layer on the top surface of concrete pile body and be connected with the abutment, the sliding layer is located the outside of prefabricated casing, also ensures that the bearing capacity of pile foundation satisfies the requirement when guaranteeing to satisfy deformability.
The utility model has the advantages that: (1) the utility model discloses a pile foundation structure mainly comprises the concrete pile body and deformation assembly, utilizes deformation assembly to replace the partial core concrete improvement pile foundation's of pile body atress deformability. (2) The utility model discloses have structure simple process, maneuverability is high, and the application is strong to and can extensively apply to in the aspect of the pile foundation structure of whole bridge, guarantee the deformability of pile foundation. (3) The pile foundation structure increases the energy consumption and the deformation capacity of the whole bridge; in addition, the pile foundation is easy to repair and replace, and the bridge length limit value of the whole bridge is increased, so that the method has important significance for the development of the whole bridge in China.
The construction method of the pile foundation structure is mainly implemented in the prefabrication and construction stages and specifically comprises the following steps:
step S1: prefabricating the prefabricated protecting cylinder and the steel bar through a factory;
step S2: welding the steel bar and the transverse steel bar at the upper end of the steel bar cage together, ensuring that the center lines of the steel bar cage and the steel bar are on the same straight line, and then pouring the lower part of the concrete pile body;
step S3: after the lower part of the concrete pile body is coagulated and hardened, penetrating a through hole at the bottom of the prefabricated pile casing through a steel bar, placing the prefabricated pile casing on the poured lower part of the concrete pile body, and then filling an elastic material between the steel bar and the prefabricated pile casing;
step S4: pouring the concrete pile body on the outer layer of the prefabricated pile casing to form an upper part structure of the concrete pile body;
step S5: arranging a slippage layer on the top surface of the concrete pile body and connecting the upper end of the steel bar with the abutment, wherein the slippage layer is positioned on the outer side of the prefabricated pile casing; the deformation assembly provides deformation capacity, and the concrete pile body provides bearing capacity.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (8)
1. The utility model provides a novel combined pile foundation structure suitable for whole bridge, includes the concrete pile body, its characterized in that: the top surface middle part of concrete pile body is equipped with the mounting hole, be provided with the deformation subassembly that is used for being connected with the abutment in the mounting hole.
2. The novel combined pile foundation structure suitable for the integral bridge according to claim 1, wherein: the subassembly that warp protects including setting up the prefabrication inside the mounting hole, the prefabrication protects the vertical rod iron that wears to be equipped with in middle part of a section of thick bamboo, the upper end of rod iron is stretched out the mounting hole and is used for being connected with the abutment, and the lower extreme of rod iron inserts in the concrete pile body, and it has elastic material to fill between the lateral wall of a section of thick bamboo is protected with the prefabrication.
3. The novel combined pile foundation structure suitable for the integral bridge of claim 2, wherein: the top surface of the prefabricated pile casing is flush with the top surface of the concrete pile body.
4. The novel combined pile foundation structure suitable for the integral bridge of claim 2, wherein: the mounting hole is a round hole; the prefabricated pile casing is of a cylindrical tubular structure with an opening at the upper end, a through hole which is beneficial to the downward penetration of a steel bar is formed in the middle of the bottom surface of the prefabricated pile casing, and the lower end of the steel bar penetrates through the through hole and then is inserted into the concrete pile body.
5. The novel combined pile foundation structure suitable for the integral bridge of claim 2, wherein: the elastic material adopts rubber particles or asphalt.
6. The novel combined pile foundation structure suitable for the integral bridge of claim 2, wherein: the inside of concrete pile body is equipped with the steel reinforcement cage, the steel reinforcement cage is located the outside of mounting hole, and the horizontal reinforcing bar and the rod iron welded fastening of steel reinforcement cage upper end.
7. The novel combined pile foundation structure suitable for the integral bridge of claim 6, wherein: the central lines of the concrete pile body, the reinforcement cage, the mounting hole, the prefabricated protective cylinder and the steel bar are coincided.
8. The novel combined pile foundation structure suitable for the integral bridge of claim 2, wherein: the distance between the steel bar and the side wall of the prefabricated pile casing is larger than 15 cm, and the distance between the side wall of the prefabricated pile casing and the outer side wall of the concrete pile body is larger than 15 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922316668.8U CN211646355U (en) | 2019-12-21 | 2019-12-21 | Novel combined pile foundation structure suitable for whole bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922316668.8U CN211646355U (en) | 2019-12-21 | 2019-12-21 | Novel combined pile foundation structure suitable for whole bridge |
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| CN211646355U true CN211646355U (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847162A (en) * | 2019-12-21 | 2020-02-28 | 福州大学 | Novel combined pile foundation structure suitable for integral bridge and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847162A (en) * | 2019-12-21 | 2020-02-28 | 福州大学 | Novel combined pile foundation structure suitable for integral bridge and construction method thereof |
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